Answer / sarbajeet jena

Since the excitation emf is zero, heavy currents would be drawn by the armature if connected to the rated voltage supply. Also, if the voltage is large, the reluctancetorque due to saliency may bring the rotor in synchronism with the rotating flux (ie.the synchronous machine will run as a reluctance motor)

What is the power plant or power station?

1 Answers  

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what is the reason for drop in freq. from 50 hz at generating side to 49.8 ,49.6 etc.at receiving side???

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What is the disadventage of gland earthing(power cable) if any. ?

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1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

3 Answers   Focus, Focus Energy,

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What are the characteristics of negative feedback?

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A electrical meter has load 500 kw. In 2 hr what rading will come on meter.

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What happens with squirrel induction machines if the ends of rotor conductors are kept open? Explain

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what is the permissible bend in the LT& HT CABLES.

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What causal system?

1 Answers   NTPC,

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What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

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how we can know the rating of transmission line by no. of insulators disk ??????????

3 Answers   NTPC,

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

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